Subject: Re: [xsl] xsl:for-each-group using multiple threads? From: "David Rudel fwqhgads@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 27 Jan 2015 14:10:03 -0000 |
I don't know if this is at all helpful because it requires two passes through the data, but... You can first create a map holding the grouping information (map(xs:integer,xs:item*)) with 1 mapped to the first group, 2 mapped to the second group, etc. Then you can processes these groups using <xsl:for-each>, which supports multi-threading: <xsl:for-each select="saxon:sort(map:keys($my.grouping.map)))" saxon:threads="8"> <xsl:variable name="group" select="$my.grouping.map(current())"/> .... <xsl:for-each/> On Tue, Jan 27, 2015 at 11:20 AM, Marc Kupietz kupietz@xxxxxxxxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Unfortunately, xsl:for-each-group does not seem to support the > saxon:threads attribute. Can anyone think of a workaround to split the > processing of groups among multiple threads without causing a lot of > overhead? > > If there is no such workaround, wouldn't it be a nice (and cheap?) > feature to add saxon:threads support to xsl:for-each-group? > I think such a feature would in many applications allow for a better > control over the thread-overhead/work ratio when using multiple > threads. > > Marc > -- "A false conclusion, once arrived at and widely accepted is not dislodged easily, and the less it is understood, the more tenaciously it is held." - Cantor's Law of Preservation of Ignorance.
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Re: [xsl] xsl:for-each-group using , Marc Kupietz kupietz | Thread | Re: [xsl] xsl:for-each-group using , David Rudel fwqhgads |
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